Convert Square Pole to Rood
Convert square poles to roods instantly. 1 square pole = 0.025 rood — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Rood to Square Pole converter for the reverse conversion.
Units explained
Square Pole
A square pole is identical to a square rod, equal to approximately 25.293 m². 'Pole' is a regional name used in some US and British contexts.
Identical to square rod and square perch; differs only in regional naming preference.
Square poles appear in some historical US land records, particularly in mid-Atlantic states with strong English colonial heritage.
Standardized via the 1959 International Yard and Pound Agreement.
Rood
A rood is an imperial unit of area equal to approximately 1011.71 m², or 1/4 of an acre. It was historically used in England and parts of the British Empire.
Defined as one-quarter of an acre; historically used in medieval English farming as the area one ox could plow in a day. The word relates to 'rod' as a measure of length used in plot dimensions.
Roods appear in historical English farming records, parish records, and old property deeds. The unit is functionally obsolete today.
Medieval English farming origin; standardized via the 1959 International Yard and Pound Agreement.
Square Pole to Rood conversion formula
The relationship between square poles and roods:
To convert square poles to roods, multiply the value in square poles by 0.025. To reverse, multiply roods by 40.
How to use this converter
Type a value into the calculator. The result in roods updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Rood to Square Pole converter for the reverse direction.
Step-by-step: convert square poles to roods
- Write down the value in square poles (pole²).
- Multiply that value by the factor 0.025.
- The product is the equivalent value in roods (rood).
- To reverse, multiply the rood value by 40.
Worked examples
Example 1 — Convert 1 pole² to rood:
1 × 0.025 = 0.025 rood
Example 2 — Convert 100 pole² to rood:
100 × 0.025 = 2.5 rood
Square Pole to Rood conversion table
Standard reference values for converting square poles to roods:
| Square Pole [pole²] | Rood [rood] |
|---|---|
| 0.01 | 0.00025 |
| 0.1 | 0.0025 |
| 1 | 0.025 |
| 2 | 0.05 |
| 3 | 0.075 |
| 4 | 0.1 |
| 5 | 0.125 |
| 10 | 0.25 |
| 20 | 0.5 |
| 30 | 0.75 |
| 40 | 1 |
| 50 | 1.25 |
| 100 | 2.5 |
| 500 | 12.5 |
| 1000 | 25 |
Frequently asked questions
How many roods is 1 square pole?
How do I convert square poles to roods?
How do I convert roods back to square poles?
How many roods is 100 square poles?
Popular area unit conversions
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Metric / SI (5 units)
Imperial / US Customary (14 units)
Sources & references
Conversion factor (1 pole² = 0.025 rood) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.